146263261 has 2 divisors, whose sum is σ = 146263262. Its totient is φ = 146263260.

The previous prime is 146263259. The next prime is 146263303. The reversal of 146263261 is 162362641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97891236 + 48372025 = 9894^2 + 6955^2 .

It is a cyclic number.

It is not a de Polignac number, because 146263261 - 2¹ = 146263259 is a prime.

Together with 146263259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146263231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73131630 + 73131631.

It is an arithmetic number, because the mean of its divisors is an integer number (73131631).

Almost surely, 2^146263261 is an apocalyptic number.

It is an amenable number.

146263261 is a deficient number, since it is larger than the sum of its proper divisors (1).

146263261 is an equidigital number, since it uses as much as digits as its factorization.

146263261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 146263261 is about 12093.9348848917. The cubic root of 146263261 is about 526.8800452389.

The spelling of 146263261 in words is "one hundred forty-six million, two hundred sixty-three thousand, two hundred sixty-one".